61006061049 has 4 divisors (see below), whose sum is σ = 81341414736. Its totient is φ = 40670707364.

The previous prime is 61006061027. The next prime is 61006061071. The reversal of 61006061049 is 94016060016.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (61006061027) and next prime (61006061071).

It is a cyclic number.

It is not a de Polignac number, because 61006061049 - 2⁸ = 61006060793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61006065049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10167676839 + ... + 10167676844.

It is an arithmetic number, because the mean of its divisors is an integer number (20335353684).

Almost surely, 2^61006061049 is an apocalyptic number.

It is an amenable number.

61006061049 is a deficient number, since it is larger than the sum of its proper divisors (20335353687).

61006061049 is a wasteful number, since it uses less digits than its factorization.

61006061049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20335353686.

The product of its (nonzero) digits is 7776, while the sum is 33.

The spelling of 61006061049 in words is "sixty-one billion, six million, sixty-one thousand, forty-nine".